Which mechanism reduces drag when a peregrine falcon dives at high speed?

💡 Explanation

During a dive, a peregrine falcon adjusts its feather structure to promote laminar flow, because aligned feathers reduce air turbulence along the wing's surface, thus minimizing pressure drag. Therefore, laminar flow control minimizes drag, rather than turbulence shedding, buoyancy change, or lift increase which would counter the dive.

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